What is the method for not including certain Lambda functions when deploying serverless applications?

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There are a few methods for not including certain Lambda functions when deploying serverless applications:

1. Use conditional statements in the serverless.yml file to selectively deploy certain functions based on environment variables.

2. Use AWS CloudFormation templates to manage individual stacks for each function.

3. Use the Serverless Framework Pro to deploy functions to specific environments, and exclude certain functions based on environment variables or tags.

4. Use AWS Lambda Layers to separate out common code that can be shared across multiple functions, and only deploy the necessary layers for each function.